Apparatus for molding golf shoe bottom with detachable spikes

ABSTRACT

A golf shoe bottom mold is provided with a plurality of bores corresponding in number and position with the spikes to be removably mounted on the golf shoe bottom. A plug of a compressible material, such as a fluorocarbon polymer, is mounted in each bore and is provided with a central bore to receive the spike end. Each spike has an enlarged flange whose diameter is substantially that of the plug. The spikes are removably mounted in spike receptacles loosely carried by an anchor plate and are pressed against the bottom mold so that the flanges compress the plugs forming a tight seal. A highly plasticized elastomer is injected into the mold between it and a shoe upper to form the shoe bottom with the spikes removably in place on the shoe bottom.

United States Patent 1 Morin Apr. 8, 1975 [541 APPARATUS FOR MOLDINGGOLF SHOE 3,587,181 6/1971 Bernier, Giblin 264/244 BOTTOM WITHDETACHABLE SPIKES 3,712,575 l/l973 Bement et al 249/9] 3,738,026 6/1973Granger 36/25 AH [75] Inventor: Eugene P. Morin, Gorham, Maine [73]Assignee: Songo Shoe Mfg. Corp., Portla d, Primary ExaminerRobert D.Baldwin M i I Assistant Examiner-John McQuade [22] Filed: June 29, 197257 ABSTRACT [21] Appl. No.: 267,573 1 e A golf shoe bottom mold isprovided with a plurality of bores corresponding in number and positionwith [52] US. Cl 249/96; 36/25 AH; 249/127; the Spikes to be removablymounted on the lf shoe 249/ bottom. A plug of a compressible material,such as a [5 fluorocarbon polymer is mounted in each bore and is [58]Field of Search 264/244; 264/244; provided with a eentra] bore toreceive the Spike 36/2-5 AH, 59; 249/134, 80-81, Each spike has anenlarged flange whose diameter is 127, 96, 97, 183, 91; 425/D1G. 11,D10. 44, substantially that of the plug. The spikes are remov- 124 ablymounted in spike receptacles loosely carried by an anchor plate and arepressed against the bottom 1 References Clted mold so that the flangescompress the plugs forming a UNlTED STATES PATENTS tight seal. A highlyplasticized elastomer is injected 2.118107 5/1938 Riddell 36/25 AG intothe mold between it and a Shoe pp to form the 2.233.241 2/1941 shoebottom with the spikes removably in place on the 3.010.229 ll/l96l shoebottom. 3.525.165 8/1970 3559,3n 2/1971 Bernicr et a1. 264/244 1 Clalm,3 Drawlng Flgures /& /7

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1. Apparatus for use in molding a golf shoe bottom comprising a. a golfshoe upper having a bottom portion; b. a plurality of spike receptaclessecured to said bottom portion, each of said spike receptacles beingprovided with an internally threaded socket; c. a plurality of spikeseach having an externally threaded portion removably threaded into theinternally threaded socket of use of said spike receptacles, a spikeportion projecting from said externally threaded portion and a circulardisk flange surrounding said spike portion, the diameter of said flangebeing substantially greater than the diameter of said spike portion; d.a bottom mold adapted to receive said bottom portion, receptacles andspikes; e. said bottom mold being made of a hard material provided witha plurality of bores; f. a cylindrical plug of a material of greatercompressibility than that of said hard material fitted into each of saidbores, each of said plugs having a central recess into which one of saidspike portions is received and also having an upper surface surroundingsaid recess, the outer diameter of said upper surface beingsubstantially equal to the diameter of the flange surrounding said spikeportion, the lower surface of said flange being in firm engagement withthe upper surface of said plug substantially throughout its diameter; g.said bottom mold also being provided with a portion to support thebottom portion of said upper spaced from said flanges during molding;and h. an anchor plate rigidly connected to said bottom portion, saidspike receptacles being loosely mounted on said anchor plate with asubstantial degree of freedom of motion transverse to the plane of saidanchor plate.